Description
Version:
Robust drill design and optimised special point geometry for the best possible chip formation and reliable chip breakage with higher feed rates at the same time. Advanced micro-geometry, convex cutting edge and conical profile grinding to provide additional stability for the main cutting edge. Optimised flute geometry and patented face geometry for reliable chip evacuation in steel materials and cast material. High-performance coating of the latest generation.
Note:
Flute length LC = L2 + 1.5 × DC.
HB and HE shanks are available at the same price as HA.
HB shank: order with No. 122471 / 122476.
HE shank: order with No. 122470 / 122475 and 129100HE.
Standard: DIN 6537 K
Tolerance nominal ?: h7
Number of cutting edges Z: 2
Tolerance nominal ?: h7
recommended maximum drilling depth L2: 5.5 mm
Overall length L: 45 mm
Shank ? Ds: 4 mm
Feed f in steel < 1100 N/mm2: 0.05 mm/rev.
Robust drill design and optimised special point geometry for the best possible chip formation and reliable chip breakage with higher feed rates at the same time. Advanced micro-geometry, convex cutting edge and conical profile grinding to provide additional stability for the main cutting edge. Optimised flute geometry and patented face geometry for reliable chip evacuation in steel materials and cast material. High-performance coating of the latest generation.
Note:
Flute length LC = L2 + 1.5 × DC.
HB and HE shanks are available at the same price as HA.
HB shank: order with No. 122471 / 122476.
HE shank: order with No. 122470 / 122475 and 129100HE.
Standard: DIN 6537 K
Tolerance nominal ?: h7
Number of cutting edges Z: 2
Tolerance nominal ?: h7
recommended maximum drilling depth L2: 5.5 mm
Overall length L: 45 mm
Shank ? Ds: 4 mm
Feed f in steel < 1100 N/mm2: 0.05 mm/rev.
